Problematic anger/ irritability is common, persistent, and difficult to treat after TBI, and has a broad impact on community and social function. Anger following TBI is related, in part, to deficits in executive function including impaired problem-solving and impaired self-monitoring. In this 2-group, 3-center clinical trial with masked outcome assessment, we will explore feasibility and efficacy of a manualized, 8-session individual treatment, Anger Self-Management Training (ASMT), compared to a treatment using non-specific ingredients of therapist attention, education, and psychological support (PRE).